Make iFrame links point to original website

I am working with companies to make their website dynamic. I iFrame their website, make changes, and then they create a page on their website with my iFrame (See example below). The problem I’m running into is that some of the links work while others link to my bubble page, rendering the links broken/useless.
I fixed some of the links by adding target= “_top” after the URLs, but that isn’t solving the lnks that don’t include a URL in the html (Ex. It may say “/blog” instead of “https://url.com/blog”)

I’m not sure what to add after the “/blog” to fix it, while I know I can add target= “_top” to the URL.

Example: https://fakeorb.carrd.co/

How can I make it so the links point to the correct place?

I figured it out!